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extensions: include current version in "invalid version" message...
extensions: include current version in "invalid version" message It is "not so rare" for the mercurial version to be badly detected at build time. In such case, version check for extensions gets confused. To help pinpoint the error, we now include the Mercurial's version number in the error message.

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mpatch.py
48 lines | 1.4 KiB | text/x-python | PythonLexer
# mpatch.py - CFFI implementation of mpatch.c
#
# Copyright 2016 Maciej Fijalkowski <fijall@gmail.com>
#
# This software may be used and distributed according to the terms of the
# GNU General Public License version 2 or any later version.
from __future__ import absolute_import
from ..pure.mpatch import *
from ..pure.mpatch import mpatchError # silence pyflakes
from . import _mpatch
ffi = _mpatch.ffi
lib = _mpatch.lib
@ffi.def_extern()
def cffi_get_next_item(arg, pos):
all, bins = ffi.from_handle(arg)
container = ffi.new("struct mpatch_flist*[1]")
to_pass = ffi.new("char[]", str(bins[pos]))
all.append(to_pass)
r = lib.mpatch_decode(to_pass, len(to_pass) - 1, container)
if r < 0:
return ffi.NULL
return container[0]
def patches(text, bins):
lgt = len(bins)
all = []
if not lgt:
return text
arg = (all, bins)
patch = lib.mpatch_fold(ffi.new_handle(arg),
lib.cffi_get_next_item, 0, lgt)
if not patch:
raise mpatchError("cannot decode chunk")
outlen = lib.mpatch_calcsize(len(text), patch)
if outlen < 0:
lib.mpatch_lfree(patch)
raise mpatchError("inconsistency detected")
buf = ffi.new("char[]", outlen)
if lib.mpatch_apply(buf, text, len(text), patch) < 0:
lib.mpatch_lfree(patch)
raise mpatchError("error applying patches")
res = ffi.buffer(buf, outlen)[:]
lib.mpatch_lfree(patch)
return res